1212101641 has 2 divisors, whose sum is σ = 1212101642. Its totient is φ = 1212101640.

The previous prime is 1212101629. The next prime is 1212101677. The reversal of 1212101641 is 1461012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1211318416 + 783225 = 34804^2 + 885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212101641 - 2¹¹ = 1212099593 is a prime.

It is a super-2 number, since 2×1212101641² = 2938380776229785762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212102641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050820 + 606050821.

It is an arithmetic number, because the mean of its divisors is an integer number (606050821).

Almost surely, 2^1212101641 is an apocalyptic number.

It is an amenable number.

1212101641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101641 is an equidigital number, since it uses as much as digits as its factorization.

1212101641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 1212101641 is about 34815.2501211753. The cubic root of 1212101641 is about 1066.2188257477.

Adding to 1212101641 its reverse (1461012121), we get a palindrome (2673113762).

The spelling of 1212101641 in words is "one billion, two hundred twelve million, one hundred one thousand, six hundred forty-one".